Well. For starters, does it _actually_ support port power control (even ganged) or does it just say it does?
Does it work using existing tools like uhubctrl [1] or similar, and you're just having a hard time porting to pyusb or has this never worked? Sincerely, Karl Palsson [1] https://github.com/mvp/uhubctl Anthony An <dstdas...@gmail.com> wrote: > I'm trying to control the power of a camera that is connected > to a ganged port power control hub. With dev = > usb.core.find(idVendor=0x1a40, idProduct=0x0401) and > bmRequestTypes = [0x00, 0x01, 0x02, 0x03, 0x20, 0x21, 0x22, > 0x23, 0x40, 0x41, 0x42, 0x43], I tried to use ctrl_transfer, > but none of them worked. Can someone help me to figure out how > to control the power? What I want is turning off the power, not > just disabling the port. > > > > > Bus 001 Device 004: ID 1a40:0401 Terminus Technology Inc. > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 9 Hub > bDeviceSubClass 0 Unused > bDeviceProtocol 1 Single TT > bMaxPacketSize0 64 > idVendor 0x1a40 Terminus Technology Inc. > idProduct 0x0401 > bcdDevice 1.00 > iManufacturer 0 > iProduct 1 USB 2.0 Hub > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 25 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0xe0 > Self Powered > Remote Wakeup > MaxPower 100mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 1 > bInterfaceClass 9 Hub > bInterfaceSubClass 0 Unused > bInterfaceProtocol 0 Full speed (or root) hub > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 3 > Transfer Type Interrupt > Synch Type None > Usage Type Data > wMaxPacketSize 0x0001 1x 1 bytes > bInterval 12 > Hub Descriptor: > bLength 9 > bDescriptorType 41 > nNbrPorts 2 > wHubCharacteristic 0x0004 > Ganged power switching > Compound device > Ganged overcurrent protection > TT think time 8 FS bits > bPwrOn2PwrGood 50 * 2 milli seconds > bHubContrCurrent 100 milli Ampere > DeviceRemovable 0x06 > PortPwrCtrlMask 0xff > Hub Port Status: > Port 1: 0000.0100 power > Port 2: 0000.0100 power > _______________________________________________ > pyusb-users mailing list > pyusb-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pyusb-users
OpenPGP-digital-signature.html
Description: OpenPGP Digital Signature
_______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
